u/Curious-Scholar562

I just started the online course and it's kind of overwhelming. There is SO much info and it's all so detailed. I don't know how to determine what i need to study in detail vs what I just need a basic understanding of and I don't have any medical background/not currently in school--just trying to switch careers and taking this course after hours to prep for the certification exam. Does anyone have any suggestions on how to determine what material to dive into in great detail vs what material to just get a surface understanding of? I saw others say that specific lab measures for specific patient populations were questions on the exam so I'm kind of scared that I need to know EVERYTHING in detail--learn every tiny structure of the anatomy like a surgeon, know every medical term, every lab value, and even saw tax document questions on a practice exam??? I'm so overwhelmed. Can someone give me some advice? :(